.certWrapper{background:var(--bg);flex-direction:column;justify-content:center;align-items:center;padding:2rem;transition:background .3s;display:flex;position:fixed;inset:0}.certWrapper.light{--bg:#f3f3f3;--text:#111;--btn-bg:#e5e5e5;--btn-hover:#d4d4d4}.certWrapper.dark{--bg:#111;--text:#eee;--btn-bg:#222;--btn-hover:#333}.themeToggle{z-index:20;background:var(--btn-bg);color:var(--text);cursor:pointer;border:1px solid #888;border-radius:999px;padding:.5rem .8rem;font-size:1rem;transition:background .2s,color .2s;position:fixed;top:1rem;right:1rem}.certImage{object-fit:contain;cursor:pointer;z-index:1;border-radius:12px;max-width:90vw;max-height:80vh;transition:transform .3s,box-shadow .3s;box-shadow:0 20px 60px #000000b3}.certImage:hover{transform:scale(1.02);box-shadow:0 25px 80px #000c}.fadeIn{opacity:1;transition:opacity .3s}.fadeOut{opacity:0;transition:opacity .2s}.nav{color:var(--text);cursor:pointer;opacity:.7;z-index:10;background:0 0;border:none;padding:0 1rem;font-size:3rem;transition:opacity .2s;position:absolute;top:50%;transform:translateY(-50%)}.nav:hover{opacity:1}.nav.left{left:1rem}.nav.right{right:1rem}.certFooter{width:100%;color:var(--text);z-index:10;flex-wrap:wrap;justify-content:space-between;align-items:center;padding:0 2rem;font-size:.9rem;display:flex;position:absolute;bottom:2rem}.btn.back{background:var(--btn-bg);color:var(--text);border:1px solid #888;border-radius:999px;padding:.5rem 1.1rem;text-decoration:none;transition:background .2s}.btn.back:hover{background:var(--btn-hover)}@media (max-width:1024px){.certImage{max-width:85vw;max-height:75vh}.nav{font-size:2.5rem}.certFooter{padding:0 1.5rem;font-size:.85rem}}@media (max-width:768px){.certWrapper{padding:1.5rem}.certImage{max-width:80vw;max-height:70vh}.nav{font-size:2rem}.certFooter{flex-direction:column;gap:.5rem;padding:0 1rem;font-size:.85rem}}@media (max-width:480px){.certImage{border-radius:8px;max-width:95vw;max-height:65vh}.nav{padding:0 .5rem;font-size:1.8rem}.themeToggle{padding:.4rem .6rem;font-size:.9rem;top:.8rem;right:.8rem}.certFooter{padding:0 .5rem;font-size:.8rem}.btn.back{padding:.45rem 1rem;font-size:.8rem}}